HTTP_Download::setCacheControl

Synopsis

Description

Define the contents of the Cache-Control header.

If set to set to "public", proxies are adviced to cache the
response, if set to "private", proxies are adviced to do not.

The maxage paramter controls the amount of seconds an entity is suggested
to be cached.
Many user agents won't even send a request for subsequent requests to the
same resource within the specified time frame.